A AngelRiot New member Sep 25, 2020 #1 Which pinouts do youtouch with the multimeter to check the correct bias?
Mcknib Well-known member Sep 25, 2020 #2 From the schematic looks like the middle pins of the trimmers would be easiest 4.32v for R20 and 3.48v for R23 Or you could probe pin 5 IC2.2 (4.32v) and pin 3 IC2.1 (3.48v) with switch SW1.2 in the correct position Last edited: Sep 25, 2020 Upvote 0 Downvote
From the schematic looks like the middle pins of the trimmers would be easiest 4.32v for R20 and 3.48v for R23 Or you could probe pin 5 IC2.2 (4.32v) and pin 3 IC2.1 (3.48v) with switch SW1.2 in the correct position
